Abstract: A gasket of non-conductive material formed of layers of a ceramic between which is embedded a wire circuit for connecting spark electrodes, high voltage connectors and ground connectors of a spark ignition system. The wire circuit includes small diameter wires surrounding gasket openings for bounding and sealing the edges of combustion chambers defined by cylinders in an internal combustion engine. The small diameter wires are insulated by the high dielectric layers of the gasket as well as by high dielectric wrappings and a sheath of high dielectric material bonded to and within the layers forming to gasket.

Abstract: A sheath for a bundle of wires includes a layer of cellular material and a layer of reinforcing material. The cellular material layer is a plastic foam layer containing at least 80% of closed cells, and the reinforcing material layer is a nonwoven layer. The layers are made of the same material.

Abstract: A multiconductor electrical cable, for use in a subterranean wellbore, having which a plurality of electrical conductors, a jacket of insulation material, and a non-metallic armor. The non-metallic armor comprises one or more layers of extruded materials or an external wrapping of materials, selected from the group consisting of extruded thermoplastic materials, extruded thermoset materials, and fiber reinforced composite materials. The non-metallic armor eliminates corrosion problems associated with prior metallic armors, and provides significant weight savings over prior metallic armors.

Abstract: An article of manufacture comprising (i) a plurality of electrical conductors, each surrounded by one or more layers of a composition comprising (a) one or more polyolefins and, bonded thereto or blended therewith, (b) a linear or cyclic organopolysiloxane containing one or more functionalized hindered amine moieties; and (ii) hydrocarbon cable filler grease within the interstices between said surrounded conductors.

Abstract: An integrated power and data communications hybrid cable assembly for local area computer network is disclosed. The network includes a hybrid cable integrating both power supply and data communications into one physical cable. For each computer workstation served, a length of cable extends between a panel and an outlet. The panel includes a cabinet defining an interior region and an interior barrier dividing the cabinet interior region into a power section and a data section. The interior barrier includes barium ferrite to magnetically isolate the data section from the power section. The hybrid cable is electrically coupled between an outlet and the panel to provide power to a computer workstation electrically coupled the outlet and to provide for data transfer between the panel and the computer workstation.

Abstract: A power transmitting elongate assembly transmits electrical or fluid power in a manipulative robot. At least one power transmitting elongate element has a longitudinal axis. Each elongate element is configured as an electrical cable or a fluid hose. A protective sleeve is wrapped completely around the at least one elongate element. The protective sleeve has a length and two opposite sides. Each side is disposed substantially parallel to the longitudinal axis. At least one fastener couples the protective sleeve to the at least one elongate element. Each fastener is wrapped around and/or attached to the protective sleeve. Each fastener includes two interconnecting components which interconnect with each other.

Abstract: Two hard steel wire-made reinforcing wires and two synthetic resin wires which are harder than a soft synthetic resin pipe wall are alternately wound spirally on an inner side of the synthetic resin pipe wall while keeping predetermined intervals.

Abstract: A magnet wire insulation designed to withstand voltage wave shapes present in inverter driven motors for a sustained period of time. A large surface area inorganic oxide, e.g., fumed silica, may be added into the magnet wire insulation for providing improved resistance to insulation degradation. Alternatively, a mixture of the large surface area inorganic oxide with a low resistivity oxide, e.g., chromium oxide, provides a greater improvement in resistance to insulation degradation. The present invention is particularly useful for extending the life of windings in a motor that is subjected to high voltage, steep wave shapes such as those found in inverter driven motors.

Abstract: An enameled wire having high resistance to partial discharges includes an electrical conductor and at least two layers of enamel on the conductor. At least one of these layers is made from resin charged with weakly conductive particles. The outermost layer constitutes an overcoat and is made from thermo-adherent resin. At least the layer directly underlying the overcoat is made from the resin charged with the particles.

Abstract: Polymeric compositions which contain a thermoplastic aromatic polyester, preferably polybutylene terephthalate, and a polyester block copolymer having a recrystallization temperature greater than 150.degree. C., preferably a thermoplastic elastomer containing aromatic polyester blocks and aliphatic polyester blocks. The ratio of the block copolymer to the aromatic polyester is 0.05:1 to 0.35:1, preferably 0.15:1 to 0.30:1. These compositions are particularly useful as the insulation on hermetic lead wires for use in refrigerant systems. To prevent cracking of such insulation when it is contacted by a varnish used to provide hermetic sealing, it can be covered by a thin layer of a fluoropolymer.

Abstract: An electrical insulating polyester film has an apparent density of 1.37 to 0.85 g/cm.sup.3 and a tensile modulus of 2.0 to 4.5 GPa.A film having low oligomer content, low cost, high heat resistance, high impact resistance, superior machinability and processability, assembling stability, and superior visibility is obtained. Furthermore, leakage of current is reduced when it is used for motor insulation.

Abstract: The invention provides a multiple parallel conductor for windings of electrical motors, including transformers, having individual insulated partial conductors with at least five partial conductors or transposed conductors. The multiple parallel conductor features a material that is partially wrapped about the individual insulated partial conductors for allowing cooling fluid to pass through the individual insulated partial conductors. The material is partially wrapped about the individual insulated partial conductors in a helical configuration. In one embodiment, the material is an aramid material such as Nomex.TM..

Abstract: This invention relates to a method of embedding electric components or optical components, such as sensors, in a high-temperature metal and the embedded products produced by the method. In the preferred embodiment the components are embedded on a substrate of the high-temperature metal by being placed on a first insulating layer. A second electrically insulating layer, a low thermal conductivity layer, a high thermal conductivity layer, and a primer layer are then deposited in order. The high thermal conductivity layer is in good thermal contact with the substrate. The high-temperature metal is deposited, preferably as molten drops, on the primer layer and the heat from the drops is conducted by high thermal conductivity layer to the substrate while the components are protected by the low thermal conductivity layer.

Abstract: The invention relates to a coated metal surface including successively, starting at the metal, at least one layer of polyurethane and at least one layer of thermoplastic polymer, it being possible for a binder to be placed between the polyurethane and the thermoplastic polymer.It is useful for covering pipes, electrical cables, telecommunication cables and stay wires.

Abstract: A primary conductor having a solid wire or wire strands that are enclosed by an insulating coating which has ribs that extend radially outwardly. The insulating coating provides electrical insulation between neighboring conductors. The ribs define air spaces which are between the ribs and space the insulated primary conductors from each other, thereby reducing the overall dielectric constant of the cable assembly. This in turn reduces the line-to-line capacitance between adjacent conductors, thereby minimizing Near End Cross Talk.

Abstract: A sandwich type insulation for electrical machinery comprising a laminate of a polymeric material such as polyimide which contains particles of an inorganic corona resistant material, said polymeric material being bonded to mica paper consisting of mica, wherein said mica paper may be impregnated with polymeric resin containing particles of inorganic corona resistant material. The resultant insulation may be used as a tape or wrapper.

Abstract: An insulation system for the windings of a dynamoelectric machine is described wherein a bundle of insulated conductors is provided with layers of groundwall insulation. The innermost layer of groundwall insulation has superior corona discharge resistant properties. A second layer of groundwall insulation which has a corona discharge resistance somewhat less than the innermost layer of groundwall is superimposed on the innermost layer.

Abstract: There is disclosed an insulated wire, having, on a conductor, an insulating coating including at least three layers, made up of an underlayer formed by applying and baking a polyamine-imide-series resin coating material, containing 0.05 to 1.0 parts by weight of a trialkylamine, and/or 5 to 20 parts by weight of an alkoxylated melamine resin, per 100 parts by weight of a polyamide-imide-series resin, an intermediate layer formed by applying and baking a polyimide-series resin coating material, and an overlayer formed by applying and baking a self-lubricating-type polyamide-imide-series resin coating material. According to the insulated wire, an insulating coating can be prevented from being damaged at the time of the working of a coil under severe conditions, even when the insulating coating is thin.

Abstract: Electrical conductor coated with a corona-resistant, multilayer insulation system comprising first, second, and third insulation layers. The first insulation layer is disposed peripherally around the electrical conductor, the second layer is disposed peripherally around the first layer, and the third layer is disposed peripherally around the second layer. The second layer is sandwiched between the first and second layers and comprises 10 to 50 parts by weight of alumina particles dispersed in 100 parts by weight of a polymeric binder.

Abstract: An electrical transmission cable for audio range and higher frequency signals uses a signal carrying conductor made of silver, in pure or nearly pure form, with a specific rectangular cross section. A dedicated ground conductor of similar material is used, the overall result being an improvement in impedance characteristics.

Abstract: An abrasion-resistant fluoropolymer mixture comprising(A) from 75 to 99% by weight of a fluorocarbon polymer(B) from 1 to 25% by weight of an oxidized polyarylene sulfide and, based on the sum (A)+(B),(C) from 0 to 15% by weight of a filler,is used for the production of feed pipes for Bowden cables which are pressure-resistant and abrasion-resistant.

Abstract: Electrical conductor coated with a corona-resistant, multilayer insulation system comprising first, second, and third insulation layers. The first insulation layer is disposed peripherally around the electrical conductor, the second layer is disposed peripherally around the first layer, and the third layer is disposed peripherally around the second layer. The second layer is sandwiched between the first and third layers and comprises 10 to 50 parts by weight of alumina particles dispersed in 100 parts by weight of a polymeric binder.

Abstract: A heat-resistant combination including a substrate, a first layer, and a second layer. The first layer includes a benzisidazole-based polymer with a first face in contact with the substrate; and the second layer contains a ceramic material and is securely fixed to a second face of said first layer.

Abstract: In order to radiate heat so that a wire does not experience smoking before a fuse blows out, a wire 10 is formed by covering a core 13 made of conductive wires with an insulation sheath 12. The insulation sheath 12 is made of a radiating insulation material having a high thermal conductivity obtained by mixing one or more of silica, alumina, magnesium oxide, boron nitride and beryllium oxide with poly vinyl chloride.

Abstract: A cable (100, 120) for transmitting electrical energy is constructed with a layer (104) of insulating and shielding material made up of pre-impregnated strands, for example glass strands (105), carrying a nonlinear dielectric material concentrically formed about an electrical conductor (102). A portion of the layer (104) is displaced by stranded material (116) pre-impregnated with a thermally conducting material to define a longitudinal heat distributing channel (114) along the cable (100, 120). The layer (104) of nonlinear dielectric material improves field control within the cable (100, 120) and also the temperature profile along the cable (100, 120), both of which improve performance and life expectancy. In addition, the electric field and the electromagnetic interference (EMI) around the cable (100, 120) are reduced. The longitudinal heat distributing channel (114) further improves the temperature profile along the cable (100, 120).

Abstract: A composite material having heat shrinkable fibers comprising LLDPE, characterized in that the LLDPE has a weight average molecular weight of from 55,000 to 130,000 and a crystallinity less than 60%.

Abstract: Improved insulative cable assemblies and methods for producing them are disclosed. The insulative cable assemblies have a conductor housed within a polymeric insulation layer expanded with expandable thermoplastic microspheres. The use of a relatively inelastic outside sheath controls the expansion of the insulative layer and assures a snug fit between the insulation and the conductor. The insulation layer is highly resilient and resistant to dielectric changes due to compression or damage from mechanical manipulation of the cable. Additionally, the ability to expand the insulative layer after cable assembly is completed provides far greater freedom in cable processing without compromising low dielectric constant.

Abstract: A flame retardant and smoke suppressant electrical insulation composition for an electrical conductor comprises an inner layer and an outer layer. The inner layer, which contacts and surrounds the conductor, comprises a foamed polymeric material selected from the group consisting of polyolefins and polyurethane. The outer layer, which contacts and surrounds the inner layer, comprises a halogenated polymeric material and at least one outer layer additive to render the outer layer flame retardant and smoke suppressant. A flame retardant and smoke suppressant insulated electrical conductor comprises a length of electrically conductive material surrounded by the insulation composition. A flame retardant and smoke suppressant jacketed electrical cable comprises a plurality of insulated electrical conductors.

Abstract: A high energy coaxial cable is disclosed which is flexible to the extent of allowing a bend radius as short as 11 1/2 inches. The cable will conduct up to 500 kiloamperes and is reinforced to resist the high magnetic forces within the cable caused by the high current conducted. The cable is therefore useful in coupling high current between parts which experience relative movement such as a stationary power supply and a recoiling gun breech.

Abstract: A pulsed voltage surge resistant magnet wire comprising a conductor, a continuous and concentric and flexible uniform coat of base insulation material superimposed on the conductor and an essentially continuous and concentric and uniform pulsed voltage surge shield overlaying the coat of base insulation material.

Abstract: A process for manufacturing a multi-layer printed wire board, also referred to as a multilayer, comprising at least two electrically insulating substrates with electrically conductive traces or layers provided on at least three surfaces thereof, in which process, by means of lamination under pressure, a cured basic substrate based on a UD-reinforced synthetic material, provided on either side with traces, is combined with and bonded to a back-up substrate, wherein during the laminating process the back-up substrate is added to the basic substrate, the back-up substrate comprising a UD-reinforced cured core layer provided at least on the side facing the conducting traces of the basic substrate with a still plastically deformable (flowable) adhesive layer, and such a pressure is exerted on the laminate as to bring said cured core layer of the back-up substrate into contact or practically into contact with the conducting traces of the basic substrate, and the space between these traces is filled with the adhesiv

Abstract: Provided is a multilayer insulated wire comprising a conductor and three or more insulating layers covering the conductor, in which each of first and second insulating layers, as counted from the conductor side, is (a) an extrusion-coating layer of an intimate resin mixture compounded so that an ethylene-based copolymer, having a carboxylic acid or a metal salt of the carboxylic acid on the side chain thereof, accounts for 5 to 40 parts by weight compared to 100 parts by weight of a thermoplastic straight-chain polyester resin, (b) an extrusion-coating layer consisting mainly of a thermoplastic straight-chain polyester resin formed by combining an acid constituent and an alcoholic constituent the whole or a part of which is cyclohexanedimethanol, or (c) an extrusion-coating layer of an intimate resin mixture compounded so that the ethylene-based copolymer, having the carboxylic acid or the metal salt of the carboxylic acid on the side chain thereof, accounts for 50 parts or less by weight compared to 100 part

Abstract: A cable having a conductor for conducting electrical current, a first layer of insulation encircling the conductor for insulating the conductor, a mesh tape applied over the first layer of insulation for reinforcing the cable and substantially limiting the cable from stretching when the cable is placed in tension, and a second layer of insulation encircling and interwoven with the mesh tape. Also provided is a method for manufacturing the cable described above.

Abstract: A telecommunications cable having a cable core in which each conductor is surrounded by an individual dual layer insulation of an inner layer of flame retardant polyolefin and an outer layer of fluorinated ethylene propylene. The cable is for plenum chamber usage in which smoke is to be minimized. Although the flame retardant polyolefin is a known smoke generating substance which does not satisfy plenum test smoke requirements, its use in this structure is entirely suitable for plenum chamber use because little or no smoke is actually generated as the outer layer protects the inner layer from combustion.

Abstract: An insulated electric wire for high-voltage direct current comprising a conductor having thereon an insulation layer including a polyethylene resin composition, and a sheath layer provided on the-outer periphery of the insulation layer. The sheath layer includes a flame retardant resin composition including a polyvinylchloride grafted polyolefin resin. The flame retardant resin composition contains either (i) a lead compound stabilizer and a hydrotalcite or (ii) a lead compound stabilizer and a phosphorous ester compound.

Abstract: The present invention features a surge-protected cable for use in the wire leads and wire-wound stators of electrical motors. The cable of the invention is of the "filter line" type. This invention reduces failures in the stator windings of variable frequency drive (VFD) motors by attenuating peak voltages and transient voltage spikes. The "filter line" type of cable insulation prevents "dirty" power from unabated travel along the axis. This invention's type of filter line cable features a core member of one or more strands of conductive material overlaid with a primary insulation layer containing ferrites and/or magnetites; this layer is then further overlaid with a flame-retardant insulation jacket layer made of high-temperature material. Both the primary insulation and the outer jacket layer are cross-linked.

Abstract: A fluorocarbon copolymer-insulated wire comprising, around a conductor, an insulating layer made of a composition comprising an ethylene-tetrafluoroethylene copolymer and an unsintered tetrafluoroethylene-propylene copolymer, which is resistant to heat, abrasion and oil, and improved in flexibility. The wire can be efficiently installed in a narrow space in various equipments and enables easy wiring work.

Abstract: The down-hole instrument cable includes a hermetically sealed optical fiber surrounded by a protective buffer layer and a protective gel within a protective tube. A layer of electrical conductors between an inner insulator and outer insulator layer surrounds the protective tube, and electrically conductive strength member strands surround the outer insulator layer. The cable includes an electrically conductive cable head body electrically connected to the strength member strands, and an electrically conductive contact subassembly, through which the optical fiber and electrical conductors extend. The contact subassembly provides a first electrical terminal for connection to the down-hole instrument, the layer of electrical conductors provides a second electrical terminal, and the optical fiber provides an optical signal pathway for the down-hole instrument.

Abstract: A ceramic insulated wire has a conductor core of copper or copper alloy, a stainless steel layer around the conductor core and a chromium oxide film (2A) around the stainless steel layer. The chromium oxide film (2A) is surrounded by an outer ceramic insulator formed by a vapor deposition method. Cladding the conductor core with stainless steel is done by inserting the core lengthwise into a stainless steel pipe, plastically working the resulting composite body to provide a desired size, and oxidizing the stainless steel which contains sufficient chromium for the formation of the chromium oxide film to have a thickness within the range of 10 nm to 1000 nm. The outer ceramic insulator formed by vapor deposition is made of Al.sub.2 O.sub.3, SiO.sub.2, AlN and Si.sub.3 N.sub.4 which provide an excellent heat resistance while the chromium oxide film substantially increases the bonding strength.

Abstract: Low viscosity, solventless, thermosetting resin compositions of bismaleimide resin composition and epoxy resins have unique heat stability and special utility as insulation for electric conductors to be used in the 200.degree.-250.degree. C. temperature range.

Abstract: An electric conductor (10, 20, 30) provided with an insulating layer (11, 21, 31) and a protective layer (12, 22, 32), surrounding the conductor, in the form of a polymer material containing at least :stabilized polyethylene. To said polyethylene there is added a combined antioxidant and voltage stabilizer, in the form of 5,10-dihydroindeno[1,2-b]indole or substituted florins thereof such as methyl, methoxy, dimethylamino or other donor substituents to counteract degradation as a result of electric load.

Abstract: The invention concerns an electrical winding with a conductor layer (14) which is sealed in an insulating layer (30) of polyethylene. The polyethylene has a degree of crosslinking of at least 60% and contains an anti-oxidant. The starting material used is a not yet crosslinked polyethylene to which a foaming agent is added so that, when heated to be crosslinked, during which it also melts, the polyethylene penetrates between the individual turns (20) in the conductor layer (14). The protective insulating layer (24) round the individual turns of the winding consists of a material which is stable at the crosslinking temperature.

Abstract: A high temperature resistant insulated electrical conductor (100) is provided in which a electrostatically deposited layer (6) of fluorocarbon material is disposed about a fiberglass insulation layer (4) encompassing a stranded or solid electrical conductor (2). Layer (6) is surrounded by a layer (8) of fiberglass insulation which in turn is preferably encompassed by a braided layer (10) of fiberglass insulation which is preferably coated with a layer (2) of protective high service temperature material. Layer (6) is preferably sintered to provide a fused homogenous construction as is layer (12) when required.

Abstract: An electrical cable for use in submersible well pumps in oil and gas well environments is provided having an electrical conductor core which is surrounded by an insulating layer of cross-linked polyethylene. A barrier layer surrounds the cross-linked polyethylene insulating layer. The barrier layer is impermeable to oil and other liquid hydrocarbons, but is permeable to low molecular gases. The barrier layer is preferably formed from a fluoropolymer and is surrounded by a polymeric protective layer. An adhesive layer attaches the barrier layer to the insulating layer.

Abstract: An electrical cable for a submersible well pump is provided which is resistant to attack by hydrogen sulfide and which is less susceptible to damage from expanding gases during decompression. The electrical cable has a central copper conductor core. The conductor core is surrounded by a layer of electrical insulation material of either thermosetting or thermoplastic material. Surrounding the insulation material is a polymeric, low permeable layer having a hydrogen sulfide permeability rate which is substantially lower than the insulation material. A metal tape layer, such as lead tape, surrounds the low permeable layer. One or more conductor cores together with the insulation, low permeable layer and metal tape layer can be embedded in an elastomeric jacket and provided with an outer metal armor to provide a single electrical cable.

Abstract: A failure-resistant electrical ignition system cable comprises first and second terminal contacts for contacting a source of ignition pulses and contacting the predetermined destination of these pulses, respectively; a plurality of flexible ignition conductors connected between the first and second terminal contacts, each of the ignition conductors being capable of electrically communicating the ignition pulses between the terminal contacts, each of the ignition conductors comprising an electrically-inert center, an elongated conductive wire spirally and interstitially wound around the center for substantially the full length thereof, each of the ignition conductors then being twisted about each other so as to provide repeated electrical contacts of the conductive wire of each whereby electrical continuity between the terminal contacts may be maintained despite the occurrence of one or more electrical discontinuities; the outer exposed surfaces of the twisted ignition conductors being electrically insulated b

Abstract: A light-weight, but strong and cut-through resistant electrical insulation tape, which is a laminate of porous polytetrafluoroethylene and polyetheretherketone. Also described are insulated wires and coaxial cables using the electrical insulation tape.

Abstract: A transmission cable having a nonhalogenated jacket and a nonhalogenated composition for use as a transmission cable jacket. The jacket is prepared from a nonhalogenated polyolefin based formulation having flame retardant, low corrosivity, low toxicity and low smoke characteristics. The jacket material insulates a core transmission medium such as a metallic conductor or optical fiber. The jacket is extruded about the core or insulator during manufacture. The inventive cable has a jacket formed of nonhalogenated polyethylene and nonhalogenated ethylene vinyl acetate and provides a combination of desired mechanical characteristics, improved performance and manufacturing features while eliminating undesirable corrosive products released during a fire.

Abstract: A bundled conductor manufactured by bundling a plurality of small diameter conductors 1, or a bundled conductor 2 manufactured by giving an extremely rough twisting pitch, which is 20 times or more larger than an outer diameter of said bundled conductor, to the bundled conductor is formed. Then, an insulating layer 3 comprising 3 layers 3a, 3b and 3c, each comprising a heat-resistant plastic film, is arranged around the bundled conductor above. A required voltage resistance characteristics is provided and maintained by any 2 of the aforesaid 3 insulating layers, and each of the 3 insulating layers described above is independent respectively and can be separated from other ones.

Abstract: A high impedance cable includes a first layer of insulation surrounding a series of conductors to form a conventional ribbon cable and a second layer of insulation which conforms to the first layer of insulation and is retained in contact with the first layer of insulation in a manner which substantially excludes air from between the two layers of insulation but permits the second layer of insulation to be stripped from the ribbon cable for convention mass termination of the ribbon cable.